133,128
133,128 is a composite number, even.
133,128 (one hundred thirty-three thousand one hundred twenty-eight) is an even 6-digit number. It is a composite number with 36 divisors, and factors as 2³ × 3² × 43². Its proper divisors sum to 236,007, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x20808.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 18
- Digit product
- 144
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 821,331
- Square (n²)
- 17,723,064,384
- Cube (n³)
- 2,359,436,115,313,152
- Divisor count
- 36
- σ(n) — sum of divisors
- 369,135
- φ(n) — Euler's totient
- 43,344
- Sum of prime factors
- 98
Primality
Prime factorization: 2 3 × 3 2 × 43 2
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√133,128 = [364; (1, 6, 1, 1, 9, 1, 2, 1, 10, 1, 5, 4, 1, 1, 1, 1, 90, 1, 1, 1, 1, 4, 5, 1, …)]
Period length 34 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-three thousand one hundred twenty-eight
- Ordinal
- 133128th
- Binary
- 100000100000001000
- Octal
- 404010
- Hexadecimal
- 0x20808
- Base64
- AggI
- One's complement
- 4,294,834,167 (32-bit)
- Scientific notation
- 1.33128 × 10⁵
- As a duration
- 133,128 s = 1 day, 12 hours, 58 minutes, 48 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλγρκηʹ
- Mayan (base 20)
- 𝋰·𝋬·𝋰·𝋨
- Chinese
- 一十三萬三千一百二十八
- Chinese (financial)
- 壹拾參萬參仟壹佰貳拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 133128, here are decompositions:
- 7 + 133121 = 133128
- 11 + 133117 = 133128
- 19 + 133109 = 133128
- 31 + 133097 = 133128
- 41 + 133087 = 133128
- 59 + 133069 = 133128
- 89 + 133039 = 133128
- 139 + 132989 = 133128
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 A0 88 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.8.8.
- Address
- 0.2.8.8
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.8.8
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 133,128 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.